I wonder if it's the same as the 135 got memory seat and auto dimming inside mirror already.

Edit just watch the video seems you can!

I am not sure but 1-Series and 3-Series have the same ECU's so I think that it is the same, plug&code&play

Someone asked me via PM if it is the same for e92 (coupé)
Yes, of course. Convertibles and Coupés have the same doors so my DIY is exactly the same.
You only have to know that the power window switch panel is different because coupés only have 2 power windows.